Powerbank for ebike ?

[eBikeLife]

I was looking into getting an additional battery for those longer rides, because i was an idiot and only ought a 400W bike. Anyways, i seen the cost of an additional battery, and was thinking about a powerbank.
Does these even exist for ebikes ?
I could not find anything online..

 

[Eckythump]

Like this....

Levo Range Extender

 

[Fivetones]

Wonder what the ball park price is on these? Not listed on website.

 

[Eckythump]

Dunno, I think there a couple of companies doing them. There is a long thread somewhere if you do a search.

 

[Fivetones]

Yes, just searched. Also the Trail Watts UK system (which is around £500 - not far off a spare battery price).